Rufus porter



R. PORTER.

Metal Punch.

. Patented 1an. 29. 1856.

Nv PETERS. niowmhugnpw, wam'mgmn. uc.

SFATES A RUFUS PORTER, OF WASHINGTON, DISTRICT OF COLUMBIA.

PUNoHING-MAGHINE.

To all whom it may concern.'

Be it known that I, RUFUs PORTER, of the city of Washington, District ofColumbia, have invented a new and useful Improvement inMomentum-Presses; and I do hereby declare that the following is a fulland exact description of the same, reference being had to t-he annexeddrawings, making part of this specification, in which- Figure l is afront View, and Fig. 2 1s a vertical longitudinal section on the line OO of Fig. l.

The nature of this invention consists in a cheap, compact and portablearrangement of machinery, in which may be readily accumulated asuicientquantity of momentum power to punch holes with facility throughcold iron or other metals.

A bed-plate A fourteen inches long, seven inches wide and one inch thickis strengthened by longitudinal flanches a a. on the sides thereof, andat the distance of four inches from the front end thereof are twoparallel posts B B, seventeen inches high, and connected by twoguide-bars C C, the one at the top, and the other near the bottom of theposts. The fronts of the posts, at the height of ten inches above thebed plate, support a horizontal shaft D, upon the left end of which ismounted a gear-wheel E, which meshes to a pinion F upon another parallelshaft in rear of the first, and upon which is mounted a fly-wheel G. Toone end of the shaft D is attached a crank I-I (or pulley) whereby thewheels are put in motion. The two guide-bars C O, being furnished withcaps in front, serve as guides to a vertical sliding shaft I, the bottomof which is hollow and adapted to hold a punch or stamp 5,' and under itis a die-plate M. Two parallel and equal quadrants J J are hung upon twoopposite pivots e c which project from the sides of the sliding shaft I,and t-hese quadrants are connected by a front plate K, and by a shortcross-bar (represented by dotted lines in Fig. 2) at N. The shaft Dpasses through the quadrants, and at a point between the two a tappet sprojects half an inch from the shaft. When the wheels are in motion, thetappet s does not ordinarily come in contact with the cross-bar N; butwhen the momentum power of the wheels is required to force down thepunch the quadrants are pressed rearward, by the hand or otherwise, sothat the tappet s in its rotation, may impinge upon the cross-bar thusconcentrating all the accumulated power of the momentum of both wheelsto depress the sliding shaft and the punch. The sliding shaft iselevated and ordinarily supported by a spring P, attached to the upperguide bar.

I claim as my invention and desire to secure by Letters Patent- The useof the double quadrant J, J, in combination with the tappet s, thesliding shaft I, when these` several parts are arranged and operated inconnection with the fly wheel G, substantially in the manner herein setfort-h.

RUFUS PORTER. Vitnesses:

SAMUEL D. BoRNsoN, GEO. W. ROGERS.

